document.write( "Question 943615: Determine the amount of each of the two solutions that must be mixed to make 250 mL of a 40% acid solution. Round to the nearest milliliter. \r
\n" ); document.write( "\n" ); document.write( "1.) 25% acid, 80% acid
\n" ); document.write( "2.) 30% acid, 60% acid
\n" ); document.write( "3.) 15% acid, 75% acid
\n" ); document.write( "4.) 10% acid, 45% acid
\n" ); document.write( "

Algebra.Com's Answer #575301 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
I will do the first, you do the other three using the same method:
\n" ); document.write( "---
\n" ); document.write( "1) 25% acid, 80% acid
\n" ); document.write( "---
\n" ); document.write( "x = mL of first solution
\n" ); document.write( "y = mL of second solution
\n" ); document.write( "---
\n" ); document.write( "x + y = 250
\n" ); document.write( "0.25x + 0.80y = 0.40*250
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "x + y = 250
\n" ); document.write( "0.25x + 0.80y = 100
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "http://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "x = 181.81818
\n" ); document.write( "y = 68.181818
\n" ); document.write( "---
\n" ); document.write( "x = 182
\n" ); document.write( "y = 68
\n" ); document.write( "---
\n" ); document.write( "Free algebra tutoring live chat:
\n" ); document.write( "http://sooeet.com/chat.php?gn=algebra
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "http://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations with quadratic formula:
\n" ); document.write( "http://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "http://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "
\n" );